PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/06-20:57:40
G03     199.0          42.7               12.5 +/-    0.61      17.4 +/-    0.61  0.080 / 0.130
G07     268.3          23.5                9.2 +/-    2.54      18.6 +/-    2.54  0.090 / 0.100
G09     316.1          38.9                8.7 +/-    1.12      12.9 +/-    1.12  0.060 / 0.140
G16     64.1           60.7               10.1 +/-    0.76      11.4 +/-    0.76  0.060 / 0.120
G22     183.5          27.2               11.6 +/-    1.30      21.6 +/-    1.30  0.040 / 0.050
G23     349.2          73.0                8.7 +/-    0.61       9.1 +/-    0.61  0.030 / 0.040
G26     45.4           31.7                8.1 +/-    0.56      13.6 +/-    0.56  0.040 / 0.040
G27     122.3          20.4               14.0 +/-    1.41      30.5 +/-    1.41  0.040 / 0.050