PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-00:12:50
G02     199.7          19.8               10.1 +/-    2.08      22.3 +/-    2.08  0.080 / 0.110
G06     175.9          48.3               10.0 +/-    0.76      12.8 +/-    0.76  0.090 / 0.140
G13     227.6          14.4                9.3 +/-    2.10      23.5 +/-    2.10  0.040 / 0.030
G17     22.3           59.8                9.1 +/-    0.66      10.4 +/-    0.66  0.040 / 0.030
G19     316.0          71.4                8.6 +/-    1.10       9.1 +/-    1.10  0.050 / 0.060
G24     309.9          30.0                9.1 +/-    0.86      15.9 +/-    0.86  0.060 / 0.070
G28     83.2           43.7                9.0 +/-    1.11      12.4 +/-    1.11  0.160 / 0.340
G30     156.7          15.6               11.2 +/-    1.28      27.4 +/-    1.28  0.150 / 0.340