PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-00:57:30
G02     200.2          25.7               11.2 +/-    1.93      21.5 +/-    1.93  0.040 / 0.050
G06     170.2          57.2               12.2 +/-    0.86      14.2 +/-    0.86  0.030 / 0.050
G13     225.3          10.9               11.0 +/-    2.99      30.2 +/-    2.99  0.050 / 0.040
G17     20.8           59.9                8.3 +/-    0.51       9.4 +/-    0.51  0.040 / 0.040
G19     332.9          70.2                8.3 +/-    0.97       8.8 +/-    0.97  0.060 / 0.120
G24     307.9          31.6                7.6 +/-    1.10      12.9 +/-    1.10  0.060 / 0.120
G28     92.2           37.3                8.5 +/-    1.02      13.0 +/-    1.02  0.050 / 0.110