PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-17:12:30
G07     340.3          60.5               11.0 +/-    0.48      12.4 +/-    0.48  0.050 / 0.040
G08     94.4           53.7               11.7 +/-    1.73      14.1 +/-    1.73  0.040 / 0.030
G09     186.5          68.2               13.3 +/-    0.44      14.2 +/-    0.44  0.020 / 0.040
G11     143.4          16.2               15.4 +/-    3.02      37.1 +/-    3.02  0.030 / 0.030
G23     155.4          31.3               12.8 +/-    2.01      21.8 +/-    2.01  0.050 / 0.090
G27     50.1           28.4                9.2 +/-    2.11      16.6 +/-    2.11  0.060 / 0.120
G28     241.9          33.9               14.5 +/-    0.99      23.4 +/-    0.99  0.150 / 0.110
G30     307.0          39.6               11.6 +/-    1.36      17.0 +/-    1.36  0.100 / 0.110