PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-10:57:40
G10     246.1          22.3                5.8 +/-    1.95      12.1 +/-    1.95  0.030 / 0.040
G13     59.6           33.3                3.5 +/-    1.25       5.7 +/-    1.25  0.030 / 0.050
G15     94.8           57.0                6.2 +/-    1.14       7.2 +/-    1.14  0.080 / 0.360
G16     302.5          14.6                1.1 +/-    0.94       2.7 +/-    0.94  0.130 / 0.320
G20     33.3           58.6                4.1 +/-    0.75       4.7 +/-    0.75  0.050 / 0.040
G21     330.2          58.2                3.1 +/-    0.72       3.6 +/-    0.72  0.040 / 0.040
G26     273.3          17.5                4.7 +/-    2.07      11.1 +/-    2.07  0.080 / 0.080
G29     162.2          54.3                6.9 +/-    0.69       8.3 +/-    0.69  0.080 / 0.100