PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-22:43:10
G07     337.5          59.5                7.8 +/-    0.61       8.9 +/-    0.61  0.080 / 0.160
G08     96.7           53.1                8.6 +/-    0.56      10.5 +/-    0.56  0.080 / 0.140
G09     190.3          71.1                8.4 +/-    0.77       8.8 +/-    0.77  0.030 / 0.050
G11     145.9          14.3                8.6 +/-    2.50      21.6 +/-    2.50  0.030 / 0.050
G23     156.1          37.0                9.2 +/-    0.82      14.1 +/-    0.82  0.060 / 0.090
G27     51.5           29.2                6.4 +/-    0.89      11.4 +/-    0.89  0.060 / 0.090
G28     240.4          32.8                7.7 +/-    1.59      12.7 +/-    1.59  0.030 / 0.050
G30     307.6          41.1                7.2 +/-    1.00      10.2 +/-    1.00  0.030 / 0.040