PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-21:42:50
G02     199.9          20.0               17.8 +/-    2.88      39.3 +/-    2.88  0.140 / 0.370
G06     170.6          52.8               14.5 +/-    0.45      17.7 +/-    0.45  0.210 / 0.300
G13     228.5          14.1               17.8 +/-    1.95      45.3 +/-    1.95  0.080 / 0.120
G17     14.2           63.6               11.7 +/-    0.46      12.9 +/-    0.46  0.110 / 0.140
G19     313.2          70.9               11.6 +/-    0.56      12.2 +/-    0.56  0.040 / 0.040
G24     310.9          28.6               10.6 +/-    1.05      19.1 +/-    1.05  0.030 / 0.050
G28     86.5           40.4               12.1 +/-    1.49      17.5 +/-    1.49  0.040 / 0.090
G30     156.7          15.2               15.3 +/-    1.43      38.0 +/-    1.43  0.060 / 0.090