PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-10:12:50
G01     70.7           32.2                2.9 +/-    0.52       4.9 +/-    0.52  0.040 / 0.060
G07     136.3          30.4                4.9 +/-    0.96       8.5 +/-    0.96  0.040 / 0.050
G11     54.9           33.4                2.6 +/-    0.72       4.2 +/-    0.72  0.080 / 0.180
G13     274.7          38.8                6.9 +/-    1.10      10.2 +/-    1.10  0.080 / 0.170
G15     304.1          14.6                1.8 +/-    3.14       4.6 +/-    3.14  0.050 / 0.040
G17     228.7          65.6                7.7 +/-    0.72       8.4 +/-    0.72  0.030 / 0.040
G18     49.3           18.6                1.7 +/-    1.40       4.0 +/-    1.40  0.120 / 0.120
G19     222.2          42.9                7.0 +/-    1.18       9.8 +/-    1.18  0.080 / 0.120
G28     2.4            61.3                4.1 +/-    0.67       4.6 +/-    0.67  0.070 / 0.070
G30     134.4          64.8                6.0 +/-    0.55       6.5 +/-    0.55  0.060 / 0.090