PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-20:28:00
G02     200.5          22.4               15.7 +/-    1.95      32.6 +/-    1.95  0.100 / 0.110
G06     168.6          56.6               15.1 +/-    0.79      17.7 +/-    0.79  0.080 / 0.100
G13     226.2          12.0               13.5 +/-    4.68      35.9 +/-    4.68  0.080 / 0.350
G17     20.1           60.5               12.4 +/-    0.72      14.0 +/-    0.72  0.090 / 0.310
G19     322.0          70.5               12.6 +/-    0.67      13.2 +/-    0.67  0.060 / 0.160
G24     308.7          31.1               11.4 +/-    1.73      19.6 +/-    1.73  0.080 / 0.150
G28     89.9           38.7               13.6 +/-    0.75      20.2 +/-    0.75  0.030 / 0.040
G30     157.2          12.8               15.4 +/-    1.60      40.4 +/-    1.60  0.030 / 0.050