PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-10:27:50
G01     76.3           33.3                4.9 +/-    0.96       8.0 +/-    0.96  0.030 / 0.030
G07     134.6          34.4                6.9 +/-    1.23      11.0 +/-    1.23  0.030 / 0.040
G11     56.1           32.8                2.9 +/-    0.71       4.8 +/-    0.71  0.060 / 0.110
G13     279.9          38.1                3.4 +/-    0.86       5.1 +/-    0.86  0.060 / 0.100
G15     310.5          11.4                1.4 +/-    1.81       3.8 +/-    1.81  0.090 / 0.190
G17     226.2          66.8                5.8 +/-    1.38       6.3 +/-    1.38  0.080 / 0.200
G18     51.5           19.4                3.4 +/-    0.97       7.7 +/-    0.97  0.040 / 0.090
G19     220.9          33.4                4.2 +/-    1.77       6.9 +/-    1.77  0.040 / 0.090
G28     9.2            60.6                2.9 +/-    0.52       3.2 +/-    0.52  0.040 / 0.060
G30     129.7          68.0                6.8 +/-    0.61       7.3 +/-    0.61  0.050 / 0.070