PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-02:42:40
G01     319.9          15.0                5.6 +/-    1.37      14.0 +/-    1.37  0.210 / 0.410
G08     259.0          15.0               10.4 +/-    2.36      26.0 +/-    2.36  0.190 / 0.520
G10     72.5           56.1                6.4 +/-    1.01       7.5 +/-    1.01  0.030 / 0.020
G11     304.9          22.9                6.1 +/-    1.94      12.4 +/-    1.94  0.030 / 0.030
G14     289.8          70.6                7.9 +/-    0.61       8.3 +/-    0.61  0.030 / 0.040
G18     98.0           32.4                7.0 +/-    0.72      11.7 +/-    0.72  0.030 / 0.040
G27     225.3          10.7               11.1 +/-    2.23      30.6 +/-    2.23  0.160 / 0.300
G31     178.0          36.8                9.4 +/-    1.34      14.4 +/-    1.34  0.210 / 0.330
G32     352.9          70.9                6.7 +/-    0.78       7.1 +/-    0.78  0.050 / 0.050