PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-22:12:50
G01     73.5           33.2               10.3 +/-    0.95      16.9 +/-    0.95  0.080 / 0.230
G07     136.1          33.5               14.0 +/-    1.09      22.9 +/-    1.09  0.070 / 0.220
G11     56.7           33.8                9.9 +/-    2.40      16.1 +/-    2.40  0.250 / 0.250
G13     277.9          37.5               12.7 +/-    1.27      19.3 +/-    1.27  0.210 / 0.230
G15     304.2          15.0                8.4 +/-    1.66      20.8 +/-    1.66  0.030 / 0.030
G17     228.8          62.6               13.9 +/-    0.96      15.5 +/-    0.96  0.030 / 0.030
G18     51.3           19.6               10.3 +/-    3.80      23.0 +/-    3.80  0.050 / 0.080
G19     222.6          39.4               14.2 +/-    1.48      20.9 +/-    1.48  0.050 / 0.080
G28     16.5           59.6               11.7 +/-    0.94      13.4 +/-    0.94  0.060 / 0.080
G30     132.9          61.6               14.1 +/-    0.33      15.8 +/-    0.33  0.050 / 0.090