PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/30-10:27:50
G01     295.6          39.7               11.4 +/-    4.76      16.7 +/-    4.76  0.060 / 0.070
G03     311.3          18.0                5.5 +/-    2.00      12.7 +/-    2.00  0.070 / 0.080
G10     116.3          30.7                5.5 +/-    0.92       9.4 +/-    0.92  0.080 / 0.080
G11     268.6          26.6                8.3 +/-    1.94      15.7 +/-    1.94  0.080 / 0.080
G14     18.8           60.9                5.6 +/-    0.67       6.3 +/-    0.67  0.060 / 0.120
G18     256.0          49.4                8.5 +/-    3.16      10.8 +/-    3.16  0.060 / 0.080
G22     314.0          38.8                4.6 +/-    1.33       6.8 +/-    1.33  0.050 / 0.050
G25     70.8           18.1                3.3 +/-    1.44       7.5 +/-    1.44  0.050 / 0.050
G31     147.8          75.6                7.3 +/-    0.60       7.5 +/-    0.60  0.130 / 0.260
G32     42.9           48.6                4.2 +/-    0.74       5.4 +/-    0.74  0.120 / 0.210