PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-00:12:30
G02     215.6          61.4               14.7 +/-    0.72      16.4 +/-    0.72  0.060 / 0.080
G06     57.7           74.3               11.5 +/-    0.34      11.9 +/-    0.34  0.060 / 0.090
G12     318.6          35.9               10.8 +/-    0.77      16.8 +/-    0.77  0.150 / 0.440
G17     54.8           36.0               10.0 +/-    1.04      15.6 +/-    1.04  0.130 / 0.400
G19     38.3           49.9                9.9 +/-    0.42      12.5 +/-    0.42  0.070 / 0.100
G24     265.5          41.6               12.3 +/-    1.36      17.5 +/-    1.36  0.080 / 0.090
G28     122.8          13.3               16.3 +/-    0.98      42.2 +/-    0.98  0.040 / 0.050