PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-22:12:50
G01     82.7           33.1               11.3 +/-    1.56      18.5 +/-    1.56  0.220 / 0.380
G07     130.8          40.5               13.0 +/-    1.21      18.7 +/-    1.21  0.110 / 0.290
G11     63.9           38.3               10.3 +/-    0.72      15.4 +/-    0.72  0.040 / 0.050
G13     287.6          37.1               12.6 +/-    0.81      19.2 +/-    0.81  0.050 / 0.050
G15     310.5          12.8                9.7 +/-    1.50      25.5 +/-    1.50  0.140 / 0.300
G17     220.4          55.6               15.5 +/-    1.26      18.3 +/-    1.26  0.130 / 0.370
G18     58.2           22.6                8.4 +/-    2.47      17.5 +/-    2.47  0.030 / 0.060
G19     217.9          32.4               14.4 +/-    1.41      24.0 +/-    1.41  0.040 / 0.050
G28     2.4            61.0               11.3 +/-    0.53      12.8 +/-    0.53  0.030 / 0.020
G30     122.1          68.5               13.9 +/-    0.62      14.8 +/-    0.62  0.030 / 0.030