PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-00:43:00
G02     199.6          18.6                8.8 +/-    1.76      20.1 +/-    1.76  0.070 / 0.110
G06     176.6          46.5               10.2 +/-    1.20      13.5 +/-    1.20  0.080 / 0.110
G13     228.5          15.2                9.6 +/-    1.91      23.7 +/-    1.91  0.030 / 0.020
G17     21.2           60.7               10.0 +/-    0.86      11.3 +/-    0.86  0.030 / 0.030
G19     311.1          71.4                7.6 +/-    1.00       8.0 +/-    1.00  0.150 / 0.380
G24     310.6          29.3                7.1 +/-    2.17      12.5 +/-    2.17  0.200 / 0.550
G28     81.7           44.2                9.7 +/-    1.91      13.2 +/-    1.91  0.050 / 0.080
G30     156.6          17.0               10.0 +/-    1.22      23.7 +/-    1.22  0.080 / 0.090