PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/05-11:58:10
G01     71.4           32.9                3.0 +/-    0.80       5.0 +/-    0.80  0.030 / 0.030
G07     137.1          31.2                4.3 +/-    0.91       7.3 +/-    0.91  0.030 / 0.030
G11     53.0           29.7                2.3 +/-    2.04       4.1 +/-    2.04  0.100 / 0.070
G13     274.6          37.8                3.4 +/-    1.49       5.2 +/-    1.49  0.060 / 0.070
G15     306.7          12.9                0.6 +/-    1.80       1.5 +/-    1.80  0.070 / 0.110
G17     233.4          71.2                4.8 +/-    0.72       5.0 +/-    0.72  0.050 / 0.090
G18     48.8           17.9                2.9 +/-    4.07       6.7 +/-    4.07  0.040 / 0.080
G19     223.5          37.5                4.7 +/-    1.20       7.1 +/-    1.20  0.050 / 0.080
G28     18.0           59.5                2.6 +/-    0.95       3.0 +/-    0.95  0.090 / 0.180
G30     135.0          64.7                4.2 +/-    0.70       4.6 +/-    0.70  0.100 / 0.200