PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/29-19:43:10
G07     334.1          58.3               12.6 +/-    0.46      14.5 +/-    0.46  0.040 / 0.040
G08     103.9          53.2               15.7 +/-    0.34      19.1 +/-    0.34  0.030 / 0.040
G09     192.4          72.9               15.4 +/-    0.52      16.0 +/-    0.52  0.050 / 0.080
G11     146.8          13.3               21.0 +/-    4.37      54.4 +/-    4.37  0.060 / 0.080
G23     154.9          37.0               15.7 +/-    1.05      24.0 +/-    1.05  0.110 / 0.110
G27     53.3           30.5               11.9 +/-    2.24      20.5 +/-    2.24  0.090 / 0.090
G28     238.7          31.1               16.7 +/-    1.46      28.5 +/-    1.46  0.040 / 0.030
G30     304.7          38.1               12.0 +/-    1.62      18.1 +/-    1.62  0.030 / 0.030