PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-04:28:10
G01     121.5          16.1                8.1 +/-    1.59      19.5 +/-    1.59  0.030 / 0.060
G07     73.7           67.3                5.2 +/-    0.49       5.6 +/-    0.49  0.040 / 0.050
G08     46.2           33.7                3.5 +/-    0.42       5.7 +/-    0.42  0.030 / 0.040
G09     177.7          29.4                6.5 +/-    3.01      11.5 +/-    3.01  0.020 / 0.040
G11     111.1          38.1                7.7 +/-    0.92      11.6 +/-    0.92  0.050 / 0.110
G13     319.5          15.9                1.3 +/-    1.87       3.2 +/-    1.87  0.040 / 0.130
G17     200.8          22.6                6.2 +/-    2.91      12.9 +/-    2.91  0.040 / 0.060
G28     288.8          56.6                6.1 +/-    0.77       7.2 +/-    0.77  0.040 / 0.060
G30     345.4          67.2                3.2 +/-    0.88       3.4 +/-    0.88  0.060 / 0.130