PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-13:57:20
G08     310.4          18.0                4.4 +/-    2.61      10.2 +/-    2.61  0.050 / 0.080
G10     332.9          60.1                2.7 +/-    0.30       3.1 +/-    0.30  0.040 / 0.060
G14     218.9          30.5                5.4 +/-    2.55       9.3 +/-    2.55  0.030 / 0.040
G21     135.1          53.3                6.7 +/-    0.70       8.1 +/-    0.70  0.040 / 0.040
G24     73.7           30.3                4.0 +/-    1.26       7.0 +/-    1.26  0.100 / 0.250
G27     272.3          37.4                5.7 +/-    2.09       8.6 +/-    2.09  0.100 / 0.180
G32     224.4          53.7                7.6 +/-    2.26       9.2 +/-    2.26  0.040 / 0.020