PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-07:28:10
G03     190.4          16.8                4.2 +/-    1.52      10.0 +/-    1.52  0.040 / 0.070
G07     298.6          42.8                3.7 +/-    1.06       5.1 +/-    1.06  0.030 / 0.070
G08     134.1          34.2                8.5 +/-    0.52      13.7 +/-    0.52  0.120 / 0.230
G09     318.6          72.1                3.3 +/-    0.92       3.5 +/-    0.92  0.140 / 0.320
G16     41.7           36.1                2.7 +/-    0.78       4.2 +/-    0.78  0.030 / 0.030
G23     131.4          75.3                3.5 +/-    1.08       3.6 +/-    1.08  0.030 / 0.030
G27     89.6           35.7                4.3 +/-    0.99       6.7 +/-    0.99  0.050 / 0.070
G30     278.1          15.5                5.5 +/-    1.43      13.6 +/-    1.43  0.050 / 0.090