PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-01:43:00
G02     238.6          76.1               10.7 +/-    0.52      11.0 +/-    0.52  0.040 / 0.040
G05     171.3          15.7               12.3 +/-    1.00      30.0 +/-    1.00  0.040 / 0.040
G06     41.1           60.3                9.7 +/-    0.61      10.9 +/-    0.61  0.180 / 0.240
G12     321.4          49.9                9.7 +/-    0.60      12.3 +/-    0.60  0.160 / 0.280
G17     67.6           26.9                6.6 +/-    0.99      12.4 +/-    0.99  0.100 / 0.100
G19     55.1           40.2                8.3 +/-    1.17      12.0 +/-    1.17  0.170 / 0.110
G24     247.2          35.7               11.3 +/-    2.02      17.7 +/-    2.02  0.040 / 0.030