PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/21-22:27:50
G01     103.1          27.6               13.0 +/-    1.18      24.0 +/-    1.18  0.080 / 0.120
G07     112.4          55.6               13.5 +/-    0.56      16.0 +/-    0.56  0.080 / 0.140
G08     42.1           20.5                9.8 +/-    2.01      21.4 +/-    2.01  0.170 / 0.340
G09     174.7          11.0               16.3 +/-    3.00      44.6 +/-    3.00  0.170 / 0.370
G11     86.8           43.6               13.7 +/-    0.76      18.8 +/-    0.76  0.040 / 0.070
G13     306.8          30.5               11.9 +/-    0.85      20.7 +/-    0.85  0.040 / 0.040
G17     208.5          38.7               16.1 +/-    1.01      23.9 +/-    1.01  0.080 / 0.110
G18     354.1          -15.6               8.9 +/-    1.89      21.8 +/-    1.89  0.080 / 0.070
G28     327.1          61.6               11.1 +/-    0.75      12.4 +/-    0.75  0.040 / 0.050
G30     60.4           78.6               12.8 +/-    1.33      13.0 +/-    1.33  0.050 / 0.070