PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-22:28:10
G02     220.7          65.5               13.6 +/-    0.68      14.7 +/-    0.68  0.030 / 0.070
G06     48.3           69.1               11.5 +/-    0.52      12.2 +/-    0.52  0.050 / 0.060
G12     320.2          41.4               11.3 +/-    0.62      16.0 +/-    0.62  0.100 / 0.080
G17     59.9           31.7                8.8 +/-    0.84      14.8 +/-    0.84  0.050 / 0.070
G19     43.2           47.3               10.7 +/-    0.62      13.9 +/-    0.62  0.030 / 0.030
G24     258.6          40.2               12.9 +/-    4.73      18.8 +/-    4.73  0.030 / 0.030
G28     125.8          9.8                15.6 +/-    2.31      43.8 +/-    2.31  0.050 / 0.050