PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/05-07:13:00
G10     296.3          51.3                5.1 +/-    0.54       6.3 +/-    0.54  0.060 / 0.100
G15     46.2           28.4                2.1 +/-    1.02       3.8 +/-    1.02  0.050 / 0.070
G20     45.6           52.5                3.8 +/-    0.69       4.7 +/-    0.69  0.030 / 0.060
G21     93.9           74.6                5.9 +/-    1.02       6.1 +/-    1.02  0.040 / 0.060
G24     98.1           26.3                7.7 +/-    0.64      14.6 +/-    0.64  0.070 / 0.120
G27     300.6          34.3                5.6 +/-    1.17       9.0 +/-    1.17  0.080 / 0.130
G32     210.1          33.1                6.7 +/-    2.42      11.0 +/-    2.42  0.040 / 0.050