PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-23:42:50
G01     71.2           33.0                9.5 +/-    1.30      15.6 +/-    1.30  0.080 / 0.070
G07     137.3          31.7               13.2 +/-    1.36      22.3 +/-    1.36  0.050 / 0.090
G11     55.7           33.1                7.8 +/-    1.52      12.9 +/-    1.52  0.050 / 0.040
G13     275.6          37.3               11.2 +/-    2.43      17.1 +/-    2.43  0.040 / 0.030
G15     302.3          15.6                7.4 +/-    1.46      18.1 +/-    1.46  0.060 / 0.040
G17     231.9          65.6               12.3 +/-    0.79      13.3 +/-    0.79  0.060 / 0.050
G19     224.0          41.6               12.7 +/-    2.17      18.1 +/-    2.17  0.050 / 0.080
G28     20.1           59.2                9.6 +/-    2.57      11.0 +/-    2.57  0.040 / 0.070
G30     135.0          58.8               13.0 +/-    0.56      15.0 +/-    0.56  0.070 / 0.110