PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/27-11:13:00
G01     83.2           32.1                4.5 +/-    0.44       7.5 +/-    0.44  0.030 / 0.070
G07     129.4          39.0                5.8 +/-    0.43       8.6 +/-    0.43  0.030 / 0.080
G11     63.8           39.1                3.7 +/-    0.46       5.5 +/-    0.46  0.060 / 0.110
G13     288.0          38.4                4.3 +/-    0.80       6.5 +/-    0.80  0.060 / 0.100
G15     312.7          11.3                2.2 +/-    1.06       5.9 +/-    1.06  0.040 / 0.060
G17     217.4          54.7                5.8 +/-    1.08       6.9 +/-    1.08  0.040 / 0.050
G18     58.3           22.5                1.8 +/-    1.06       3.7 +/-    1.06  0.060 / 0.150
G19     215.8          33.1                4.8 +/-    1.30       7.9 +/-    1.30  0.080 / 0.190
G28     343.2          61.5                3.9 +/-    0.52       4.4 +/-    0.52  0.050 / 0.120
G30     117.2          73.4                6.4 +/-    0.91       6.6 +/-    0.91  0.060 / 0.130