PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-00:12:30
G02     210.2          53.8               12.9 +/-    0.51      15.6 +/-    0.51  0.030 / 0.020
G06     88.2           79.1               10.7 +/-    0.53      10.9 +/-    0.53  0.030 / 0.030
G12     315.8          29.2                8.6 +/-    1.19      15.4 +/-    1.19  0.120 / 0.140
G17     48.0           41.0                8.5 +/-    1.09      12.1 +/-    1.09  0.090 / 0.080
G19     28.9           54.7                9.7 +/-    1.52      11.6 +/-    1.52  0.090 / 0.090
G24     275.9          42.4               12.8 +/-    2.18      18.0 +/-    2.18  0.090 / 0.070
G28     117.5          18.8               11.2 +/-    1.86      25.3 +/-    1.86  0.100 / 0.250