PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-00:12:40
G01     239.9          28.7                5.9 +/-    1.14      10.7 +/-    1.14  0.040 / 0.040
G03     311.8          53.1                2.4 +/-    1.49       2.9 +/-    1.49  0.040 / 0.040
G14     71.7           33.7                2.9 +/-    1.47       4.7 +/-    1.47  0.040 / 0.050
G16     162.4          25.5                9.2 +/-    1.52      17.7 +/-    1.52  0.030 / 0.050
G22     282.8          73.4                3.7 +/-    0.63       3.9 +/-    0.63  0.080 / 0.230
G23     294.2          25.0                5.4 +/-    1.20      10.6 +/-    1.20  0.070 / 0.200
G26     129.3          45.7                8.8 +/-    0.69      11.7 +/-    0.69  0.100 / 0.170
G31     39.5           51.0                1.9 +/-    0.84       2.3 +/-    0.84  0.090 / 0.160
G32     85.7           17.7                4.4 +/-    1.51      10.3 +/-    1.51  0.120 / 0.190