PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-17:28:00
G02     201.7          24.5               16.7 +/-    3.32      33.1 +/-    3.32  0.360 / 0.540
G06     165.1          61.2               14.3 +/-    0.76      16.1 +/-    0.76  0.240 / 0.420
G12     303.6          11.7                8.7 +/-   17.84      23.3 +/-   17.84  0.140 / 0.150
G17     27.4           55.9               12.1 +/-    1.08      14.3 +/-    1.08  0.160 / 0.130
G19     330.3          69.7               12.5 +/-    0.42      13.3 +/-    0.42  0.040 / 0.030
G24     305.3          34.1               11.9 +/-    1.89      19.2 +/-    1.89  0.050 / 0.040
G28     93.7           36.7               12.7 +/-    0.86      19.6 +/-    0.86  0.240 / 0.300
G30     157.9          10.5               12.9 +/-    2.11      35.6 +/-    2.11  0.150 / 0.290