PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/15-11:27:10
G02     217.0          60.9                5.0 +/-    1.15       5.7 +/-    1.15  0.040 / 0.050
G06     54.9           72.6                3.6 +/-    0.36       3.7 +/-    0.36  0.050 / 0.050
G12     318.9          38.7                2.1 +/-    1.57       3.2 +/-    1.57  0.050 / 0.080
G17     57.0           32.4                3.0 +/-    1.49       5.0 +/-    1.49  0.040 / 0.080
G19     42.0           46.9                3.0 +/-    1.22       3.9 +/-    1.22  0.090 / 0.320
G24     266.0          40.7                3.9 +/-    1.73       5.6 +/-    1.73  0.100 / 0.250
G28     120.9          20.0                3.5 +/-    1.01       7.8 +/-    1.01  0.060 / 0.080