PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/06-23:27:40
G01     126.3          11.9               -1.9 +/-   38.94      -5.0 +/-   38.94  0.150 / 0.310
G07     64.3           67.4                8.6 +/-    0.31       9.2 +/-    0.31  0.090 / 0.380
G08     48.8           36.9                7.3 +/-    1.25      11.1 +/-    1.25  0.070 / 0.130
G09     177.8          35.3               10.1 +/-    1.34      15.9 +/-    1.34  0.130 / 0.130
G11     115.4          36.3                2.5 +/-    1.15       3.9 +/-    1.15  0.030 / 0.030
G13     320.7          12.7               -4.2 +/-   14.30     -10.9 +/-   14.30  0.030 / 0.030
G17     198.9          17.6               11.7 +/-    2.43      27.4 +/-    2.43  0.110 / 0.200
G18     98.9           16.9               10.1 +/-    1.24      24.0 +/-    1.24  0.110 / 0.220
G28     273.7          50.9                9.2 +/-    3.43      11.5 +/-    3.43  0.060 / 0.090
G30     332.8          60.8                6.7 +/-    0.63       7.5 +/-    0.63  0.060 / 0.100