PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-22:57:30
G07     338.8          59.9                6.9 +/-    0.36       7.9 +/-    0.36  0.080 / 0.130
G08     95.0           53.2                8.7 +/-    0.66      10.5 +/-    0.66  0.080 / 0.180
G09     189.4          70.2               11.1 +/-    0.78      11.7 +/-    0.78  0.030 / 0.040
G11     145.3          14.8               10.0 +/-    2.33      25.1 +/-    2.33  0.040 / 0.040
G23     156.4          36.3                9.3 +/-    1.00      14.4 +/-    1.00  0.050 / 0.130
G27     50.8           28.8                6.8 +/-    2.79      12.2 +/-    2.79  0.050 / 0.140
G28     241.0          33.4                7.9 +/-    1.36      13.0 +/-    1.36  0.030 / 0.040
G30     308.2          41.5                7.3 +/-    1.27      10.4 +/-    1.27  0.030 / 0.030