PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-20:28:00
G01     46.6           22.7               12.0 +/-    2.47      24.8 +/-    2.47  0.070 / 0.170
G06     176.2          30.4               17.8 +/-    1.50      30.9 +/-    1.50  0.070 / 0.140
G11     44.0           12.1               10.4 +/-    3.52      27.8 +/-    3.52  0.360 / 0.380
G13     246.1          27.8               18.9 +/-    1.78      34.7 +/-    1.78  0.480 / 0.530
G15     279.8          14.7               14.1 +/-    1.43      35.4 +/-    1.43  0.060 / 0.080
G17     320.6          76.9               16.3 +/-    0.41      16.7 +/-    0.41  0.060 / 0.100
G19     253.7          62.0               17.2 +/-    0.80      19.2 +/-    0.80  0.100 / 0.150
G24     318.6          12.1               -6.0 +/-   33.94     -16.0 +/-   33.94  0.080 / 0.100
G28     59.5           50.9               14.9 +/-    0.93      18.6 +/-    0.93  0.040 / 0.060
G30     151.5          35.9               16.9 +/-    0.66      26.3 +/-    0.66  0.040 / 0.050