PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-04:58:00
G01     290.9          40.1                5.5 +/-    4.55       8.0 +/-    4.55  0.040 / 0.040
G03     311.4          14.6                4.9 +/-    5.40      12.3 +/-    5.40  0.030 / 0.040
G10     119.3          30.0                6.2 +/-    2.00      10.9 +/-    2.00  0.050 / 0.070
G11     262.9          27.2                8.6 +/-    2.33      16.0 +/-    2.33  0.060 / 0.090
G14     26.5           57.8                7.8 +/-    1.28       9.0 +/-    1.28  0.040 / 0.090
G22     313.7          38.3                7.3 +/-    2.30      11.0 +/-    2.30  0.050 / 0.080
G25     62.9           17.4                6.6 +/-    1.23      15.6 +/-    1.23  0.070 / 0.070
G26     158.3          12.0                8.0 +/-    2.25      21.4 +/-    2.25  0.060 / 0.090
G31     135.6          78.8                9.3 +/-    0.54       9.5 +/-    0.54  0.060 / 0.040
G32     49.4           43.6                7.6 +/-    0.97      10.4 +/-    0.97  0.050 / 0.040