PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/10-22:57:50
G07     47.2           68.5                7.5 +/-    0.84       8.0 +/-    0.84  0.170 / 0.120
G08     53.6           41.6                6.7 +/-    0.52       9.6 +/-    0.52  0.130 / 0.120
G09     178.5          42.0                9.1 +/-    0.80      12.9 +/-    0.80  0.150 / 0.330
G11     121.9          32.8                9.8 +/-    1.34      16.3 +/-    1.34  0.140 / 0.390
G17     198.3          11.6                2.9 +/-   23.37       7.8 +/-   23.37  0.030 / 0.030
G18     104.7          14.0                9.3 +/-    2.27      23.8 +/-    2.27  0.030 / 0.030
G23     161.3          14.3               10.3 +/-    2.63      25.9 +/-    2.63  0.260 / 0.340
G27     38.9           13.8                6.6 +/-    3.01      16.8 +/-    3.01  0.150 / 0.190
G28     265.1          47.2                7.5 +/-    4.42       9.8 +/-    4.42  0.070 / 0.060
G30     326.4          55.9                6.9 +/-    0.44       8.1 +/-    0.44  0.080 / 0.070