PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-12:43:00
G01     119.9          17.1                5.4 +/-    2.02      12.8 +/-    2.02  0.110 / 0.120
G07     82.0           64.6                4.7 +/-    0.52       5.2 +/-    0.52  0.110 / 0.130
G08     45.0           30.7                3.5 +/-    0.98       6.0 +/-    0.98  0.030 / 0.030
G09     175.3          25.1                6.2 +/-    1.51      12.1 +/-    1.51  0.030 / 0.030
G11     105.5          38.0                5.7 +/-    0.61       8.6 +/-    0.61  0.170 / 0.350
G13     319.2          16.5                4.1 +/-    4.13       9.7 +/-    4.13  0.250 / 0.330
G17     200.7          25.7                3.1 +/-    1.86       6.0 +/-    1.86  0.030 / 0.030
G28     290.9          56.8                3.3 +/-    1.34       3.9 +/-    1.34  0.030 / 0.030
G30     341.0          65.7                3.8 +/-    0.72       4.1 +/-    0.72  0.150 / 0.190