PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-05:27:50
G01     95.3           30.4                7.0 +/-    1.10      12.2 +/-    1.10  0.030 / 0.040
G07     121.1          48.8                7.7 +/-    0.44       9.8 +/-    0.44  0.030 / 0.040
G08     42.0           11.0                2.7 +/-    3.19       7.3 +/-    3.19  0.160 / 0.370
G11     75.0           41.1                4.8 +/-    1.38       6.9 +/-    1.38  0.120 / 0.290
G13     300.7          33.4                2.6 +/-    0.94       4.2 +/-    0.94  0.040 / 0.040
G17     211.4          50.1                8.0 +/-    0.49      10.1 +/-    0.49  0.030 / 0.040
G19     212.6          24.1                7.3 +/-    1.98      14.6 +/-    1.98  0.060 / 0.080
G28     341.7          61.8                3.4 +/-    0.77       3.8 +/-    0.77  0.070 / 0.090
G30     89.4           77.2                5.8 +/-    0.21       5.9 +/-    0.21  0.030 / 0.040