PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-15:28:00
G01     78.1           33.3               10.2 +/-    1.10      16.8 +/-    1.10  0.040 / 0.030
G07     133.6          36.6               11.5 +/-    0.50      17.8 +/-    0.50  0.030 / 0.020
G11     58.1           34.3                9.9 +/-    1.82      15.9 +/-    1.82  0.040 / 0.070
G13     282.1          37.9                9.9 +/-    1.59      14.9 +/-    1.59  0.050 / 0.060
G15     309.6          12.4                7.9 +/-    1.68      20.8 +/-    1.68  0.050 / 0.100
G17     224.2          63.2               12.4 +/-    1.23      13.7 +/-    1.23  0.060 / 0.110
G18     53.9           20.8                9.5 +/-    5.81      20.6 +/-    5.81  0.180 / 0.330
G19     220.1          33.6               12.8 +/-    1.50      20.8 +/-    1.50  0.390 / 0.300
G28     8.4            60.6               10.8 +/-    1.70      12.3 +/-    1.70  0.060 / 0.090
G30     127.5          68.4               11.7 +/-    0.73      12.5 +/-    0.73  0.060 / 0.090