PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-19:13:10
G01     86.8           32.5               14.3 +/-    0.59      23.7 +/-    0.59  0.140 / 0.390
G07     128.1          43.4               16.5 +/-    0.83      22.8 +/-    0.83  0.100 / 0.340
G11     66.3           39.2               12.8 +/-    0.44      18.8 +/-    0.44  0.030 / 0.040
G13     291.3          36.7               13.7 +/-    1.05      21.1 +/-    1.05  0.030 / 0.030
G15     313.7          10.9                3.3 +/-   28.96       9.1 +/-   28.96  0.060 / 0.070
G17     217.4          53.1               16.2 +/-    1.96      19.7 +/-    1.96  0.050 / 0.100
G18     61.2           23.4               12.0 +/-    1.07      24.3 +/-    1.07  0.050 / 0.060
G19     216.2          28.4               15.2 +/-    1.52      27.5 +/-    1.52  0.050 / 0.050
G28     355.4          61.5               14.5 +/-    1.03      16.2 +/-    1.03  0.040 / 0.070
G30     113.9          73.0               16.1 +/-    0.82      16.8 +/-    0.82  0.050 / 0.060