PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-10:28:00
G01     71.5           32.3                4.8 +/-    1.00       8.0 +/-    1.00  0.050 / 0.080
G07     135.9          30.9                6.2 +/-    1.51      10.7 +/-    1.51  0.060 / 0.080
G11     55.3           33.7                3.9 +/-    1.17       6.3 +/-    1.17  0.040 / 0.050
G13     275.6          38.9                5.8 +/-    1.05       8.5 +/-    1.05  0.050 / 0.040
G15     304.9          14.3                1.3 +/-    2.25       3.2 +/-    2.25  0.090 / 0.110
G17     227.7          64.8                6.9 +/-    1.08       7.5 +/-    1.08  0.120 / 0.090
G18     49.8           18.9                4.1 +/-    1.46       9.3 +/-    1.46  0.080 / 0.300
G19     221.7          42.2                6.8 +/-    2.03       9.6 +/-    2.03  0.080 / 0.310
G28     1.3            61.4                4.7 +/-    0.64       5.3 +/-    0.64  0.050 / 0.030
G30     133.6          65.3                5.8 +/-    0.31       6.3 +/-    0.31  0.030 / 0.030