PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-00:28:10
G02     215.5          61.4               13.0 +/-    0.77      14.6 +/-    0.77  0.040 / 0.110
G06     58.2           74.5               10.5 +/-    0.34      10.8 +/-    0.34  0.060 / 0.110
G12     318.5          35.7               10.3 +/-    1.49      16.1 +/-    1.49  0.030 / 0.050
G17     54.5           36.3                8.6 +/-    0.75      13.4 +/-    0.75  0.040 / 0.050
G19     38.2           50.0                8.6 +/-    0.41      10.8 +/-    0.41  0.180 / 0.420
G24     265.8          41.6               11.1 +/-    1.14      15.8 +/-    1.14  0.150 / 0.420
G28     122.7          13.4               12.4 +/-    1.55      31.9 +/-    1.55  0.060 / 0.090