PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/06-05:42:50
G02     218.2          65.5                4.3 +/-    0.72       4.7 +/-    0.72  0.230 / 0.390
G06     54.0           75.0                2.8 +/-    0.43       2.8 +/-    0.43  0.280 / 0.410
G12     319.1          37.3                2.5 +/-    1.04       3.9 +/-    1.04  0.070 / 0.060
G17     59.5           31.3                3.0 +/-    1.26       5.1 +/-    1.26  0.040 / 0.060
G19     43.6           46.8                2.4 +/-    1.29       3.2 +/-    1.29  0.050 / 0.060
G24     262.6          40.7                4.7 +/-    3.85       6.8 +/-    3.85  0.070 / 0.070
G28     124.9          10.7                5.6 +/-    4.33      15.5 +/-    4.33  0.030 / 0.020