PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-11:42:50
G01     66.5           32.3                2.3 +/-    0.80       3.8 +/-    0.80  0.050 / 0.120
G07     139.4          27.1                6.5 +/-    0.94      12.2 +/-    0.94  0.050 / 0.120
G11     50.6           27.2                1.4 +/-    1.03       2.6 +/-    1.03  0.040 / 0.030
G13     269.4          37.1                9.4 +/-    1.00      14.3 +/-    1.00  0.040 / 0.040
G15     304.3          13.1                1.8 +/-    1.25       4.6 +/-    1.25  0.060 / 0.080
G17     242.5          73.7                7.9 +/-    0.31       8.2 +/-    0.31  0.060 / 0.080
G18     45.4           15.5                0.3 +/-    1.52       0.7 +/-    1.52  0.070 / 0.110
G19     226.6          40.6                8.7 +/-    0.77      12.6 +/-    0.77  0.080 / 0.090
G28     24.4           58.8                4.5 +/-    0.44       5.1 +/-    0.44  0.110 / 0.390
G30     139.4          59.9                7.1 +/-    0.72       8.0 +/-    0.72  0.110 / 0.290