PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-01:57:50
G01     80.4           33.2                4.3 +/-    0.60       7.1 +/-    0.60  0.060 / 0.200
G07     132.2          38.4                6.1 +/-    1.17       9.1 +/-    1.17  0.070 / 0.200
G11     62.3           37.4                2.6 +/-    0.73       3.9 +/-    0.73  0.050 / 0.050
G13     285.6          37.2                3.9 +/-    1.00       5.9 +/-    1.00  0.050 / 0.060
G15     308.6          13.7                2.5 +/-    1.64       6.4 +/-    1.64  0.030 / 0.040
G17     222.3          60.4                3.8 +/-    1.44       4.3 +/-    1.44  0.020 / 0.040
G19     218.9          35.2                5.5 +/-    1.46       8.7 +/-    1.46  0.050 / 0.090
G28     6.4            60.7                1.5 +/-    0.45       1.7 +/-    0.45  0.050 / 0.080
G30     125.8          64.7                4.6 +/-    0.32       5.0 +/-    0.32  0.040 / 0.100